ref: e0b783bb7b9b73ff48b079a50156e0efdbf08be3
dir: /macros/scripts/audio.asm/
channel_count: MACRO _num_channels = \1 - 1 ENDM channel: MACRO dn (_num_channels << 2), \1 - 1 ; channel id dw \2 ; address _num_channels = 0 ENDM note: MACRO dn (\1), (\2) - 1 ; pitch, length ENDM drum_note: MACRO note \1, \2 ; drum instrument, length ENDM rest: MACRO note 0, \1 ; length ENDM square_note: MACRO db \1 ; length IF \3 < 0 dn \2, %1000 | (\3 * -1) ; volume envelope ELSE dn \2, \3 ; volume envelope ENDC dw \4 ; frequency ENDM noise_note: MACRO db \1 ; length IF \3 < 0 dn \2, %1000 | (\3 * -1) ; volume envelope ELSE dn \2, \3 ; volume envelope ENDC db \4 ; frequency ENDM ; MusicCommands indexes (see audio/engine.asm) const_def $d0 FIRST_MUSIC_CMD EQU const_value const octave_cmd ; $d0 octave: MACRO db octave_cmd | 8 - (\1) ; octave ENDM const_skip 7 ; all octave values const note_type_cmd ; $d8 note_type: MACRO db note_type_cmd db \1 ; note length IF _NARG >= 2 IF \3 < 0 dn \2, %1000 | (\3 * -1) ; volume envelope ELSE dn \2, \3 ; volume envelope ENDC ENDC ENDM ; only valid on the noise channel drum_speed: MACRO note_type \1 ; note length ENDM const transpose_cmd ; $d9 transpose: MACRO db transpose_cmd dn \1, \2 ; num octaves, num pitches ENDM const tempo_cmd ; $da tempo: MACRO db tempo_cmd bigdw \1 ; tempo ENDM const duty_cycle_cmd ; $db duty_cycle: MACRO db duty_cycle_cmd db \1 ; duty cycle ENDM const volume_envelope_cmd ; $dc volume_envelope: MACRO db volume_envelope_cmd IF \2 < 0 dn \1, %1000 | (\2 * -1) ; volume envelope ELSE dn \1, \2 ; volume envelope ENDC ENDM const pitch_sweep_cmd ; $dd pitch_sweep: MACRO db pitch_sweep_cmd IF \2 < 0 dn \1, %1000 | (\2 * -1) ; pitch sweep ELSE dn \1, \2 ; pitch sweep ENDC ENDM const duty_cycle_pattern_cmd ; $de duty_cycle_pattern: MACRO db duty_cycle_pattern_cmd db (\1 << 6) | (\2 << 4) | (\3 << 2) | (\4 << 0) ; duty cycle pattern ENDM const toggle_sfx_cmd ; $df toggle_sfx: MACRO db toggle_sfx_cmd ENDM const pitch_slide_cmd ; $e0 pitch_slide: MACRO db pitch_slide_cmd db \1 - 1 ; duration dn 8 - \2, \3 % 12 ; octave, pitch ENDM const vibrato_cmd ; $e1 vibrato: MACRO db vibrato_cmd db \1 ; delay IF _NARG > 2 dn \2, \3 ; extent, rate ELSE db \2 ; LEGACY: Support for 1-arg extent ENDC ENDM const unknownmusic0xe2_cmd ; $e2 unknownmusic0xe2: MACRO db unknownmusic0xe2_cmd db \1 ; unknown ENDM const toggle_noise_cmd ; $e3 toggle_noise: MACRO db toggle_noise_cmd IF _NARG > 0 db \1 ; drum kit ENDC ENDM const force_stereo_panning_cmd ; $e4 force_stereo_panning: MACRO db force_stereo_panning_cmd dn %1111 * (1 && \1), %1111 * (1 && \2) ; left enable, right enable ENDM const volume_cmd ; $e5 volume: MACRO db volume_cmd IF _NARG > 1 dn \1, \2 ; left volume, right volume ELSE db \1 ; LEGACY: Support for 1-arg volume ENDC ENDM const pitch_offset_cmd ; $e6 pitch_offset: MACRO db pitch_offset_cmd bigdw \1 ; pitch offset ENDM const unknownmusic0xe7_cmd ; $e7 unknownmusic0xe7: MACRO db unknownmusic0xe7_cmd db \1 ; unknown ENDM const unknownmusic0xe8_cmd ; $e8 unknownmusic0xe8: MACRO db unknownmusic0xe8_cmd db \1 ; unknown ENDM const tempo_relative_cmd ; $e9 tempo_relative: MACRO db tempo_relative_cmd bigdw \1 ; tempo adjustment ENDM const restart_channel_cmd ; $ea restart_channel: MACRO db restart_channel_cmd dw \1 ; address ENDM const new_song_cmd ; $eb new_song: MACRO db new_song_cmd bigdw \1 ; id ENDM const sfx_priority_on_cmd ; $ec sfx_priority_on: MACRO db sfx_priority_on_cmd ENDM const sfx_priority_off_cmd ; $ed sfx_priority_off: MACRO db sfx_priority_off_cmd ENDM const unknownmusic0xee_cmd ; $ee unknownmusic0xee: MACRO db unknownmusic0xee_cmd dw \1 ; address ENDM const stereo_panning_cmd ; $ef stereo_panning: MACRO db stereo_panning_cmd dn %1111 * (1 && \1), %1111 * (1 && \2) ; left enable, right enable ENDM const sfx_toggle_noise_cmd ; $f0 sfx_toggle_noise: MACRO db sfx_toggle_noise_cmd IF _NARG > 0 db \1 ; drum kit ENDC ENDM const music0xf1_cmd ; $f1 music0xf1: MACRO db music0xf1_cmd ENDM const music0xf2_cmd ; $f2 music0xf2: MACRO db music0xf2_cmd ENDM const music0xf3_cmd ; $f3 music0xf3: MACRO db music0xf3_cmd ENDM const music0xf4_cmd ; $f4 music0xf4: MACRO db music0xf4_cmd ENDM const music0xf5_cmd ; $f5 music0xf5: MACRO db music0xf5_cmd ENDM const music0xf6_cmd ; $f6 music0xf6: MACRO db music0xf6_cmd ENDM const music0xf7_cmd ; $f7 music0xf7: MACRO db music0xf7_cmd ENDM const music0xf8_cmd ; $f8 music0xf8: MACRO db music0xf8_cmd ENDM const unknownmusic0xf9_cmd ; $f9 unknownmusic0xf9: MACRO db unknownmusic0xf9_cmd ENDM const set_condition_cmd ; $fa set_condition: MACRO db set_condition_cmd db \1 ; condition ENDM const sound_jump_if_cmd ; $fb sound_jump_if: MACRO db sound_jump_if_cmd db \1 ; condition dw \2 ; address ENDM const sound_jump_cmd ; $fc sound_jump: MACRO db sound_jump_cmd dw \1 ; address ENDM const sound_loop_cmd ; $fd sound_loop: MACRO db sound_loop_cmd db \1 ; count dw \2 ; address ENDM const sound_call_cmd ; $fe sound_call: MACRO db sound_call_cmd dw \1 ; address ENDM const sound_ret_cmd ; $ff sound_ret: MACRO db sound_ret_cmd ENDM